NPCs composing that spawngroup :

#a_blood_fin_piranha (35%)

a_greenblood_piranha (65%)

NPCs spawning around that spawngroup :
(Max range : 100)

cazicthule_135, range=33 (89,-223,-245)

a_greenblood_piranha (50%)
a_large_greenblood_piranha (50%)

cazicthule_87, range=38 (150,-229,-275)

a_greenblood_piranha (100%)

cazicthule_107, range=40 (159,-209,4)

a_jungle_stalker (50%)
a_jungle_stalker (50%)

cazicthule_110, range=57 (174,-193,-231)

#a_razor_fin_piranha (50%)
a_large_greenblood_piranha (50%)

cazicthule_55, range=98 (35,-259,3)

cazicthule_54, range=94 (48,-271,3)

cazicthule_50, range=58 (162,-248,3)

cazicthule_36, range=77 (123,-131,4)